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Scala dei Turchi, Agrigento, Sicily, Italy
Casner Canyon in Wet Beaver Creek Wilderness viewed from White Mesa summit, in Coconino National Forest, Arizona, United States of America
Corinth Canal connecting the Gulf of Corinth in the Ionian Sea with the Saronic Gulf in the Aegean Sea, Greece
Drone aerial view of Kriaritsi project area with abandoned roads in the south of Greece, Sithonia, Chalkidiki, Greece
Petrified forest, Agia Marina, Agios Nikolaos Geopark, beach with turquoise water in the south of Greece, Greece
Petrified forest, Agia Marina, Agios Nikolaos Geopark, beach with turquoise water in the south of Greece, Greece
Petrified forest, Agia Marina, Agios Nikolaos Geopark, beach with turquoise water in the south of Greece, Greece
Ancient theatre at the Asclepieion of Epidaurus, UNESCO, Peloponnese, Greece
Aerial view of the Site of Hegra (Madain Salih), UNESCO, in the area of AlUla, Medina Province, Saudi Arabia
Entrance of the passage through the Siq channel at Jabal Ithlib area of Hegra (Madain Salih), UNESCO, AlUla, Medina Province, Saudi Arabia
Woman in front of Face Rock, a sandstone rock formation in shape of human head profile, Hegra, UNESCO, AlUla, Medina Province, Saudi Arabia
Woman in front of Face Rock, a sandstone rock formation in shape of human head profile, Hegra, UNESCO, AlUla, Medina Province, Saudi Arabia
Jabal Alfil (Elephant Rock) by night, a natural red sandstone formation in the area of AlUla, Medina Province, Saudi Arabia
Watch man and ticket office at Bimmah Sinkhole (doline), near Tiwi, Sultanate of Oman
Navagio beach with the famous wrecked ship, Zante (Zakynthos), Greek Islands, Greece
Former Mine Working Slate Cavern Tunnel at Dinorwig Quarry (Dinorwic Quarry), Eryri (Snowdonia National Park), North Wales, United Kingdom
The Royal Complex at the Mesoamerican archaeological site of Lamanai (Submerged Crocodile), Belize
Rock formations in the oasis Tigui, Tibesti Mountains, Chad
Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad
Aerial of the Trou du Natron volcanic crater and its natron lakes, Tibesti Mountains, Chad
Tank from the Libyan Chad war, Tibesti Mountains, Chad
The Thumb, Monument Valley Navajo Tribal Park, Utah, United States of America
West Mitten Butte, Monument Valley Navajo Tribal Park, Utah, United States of America
West Mitten Butte, Monument Valley Navajo Tribal Park, Utah, United States of America
Shoreline view of the historic Bainbridge Steel Dam near Ash Fork, Kaibab National Forest, Arizona, United States of America
View of the lake created by the historic Bainbridge Steel Dam near Ash Fork, Kaibab National Forest, Arizona, United States of America
View of Gullfoss Waterfall on the Hvita River in winter, Western Region, Iceland
Continental drift between North American and Eurasian tectonic plates, Thingvellir National Park, UNESCO, in winter, Western Region, Iceland
St. David's Battery, UNESCO, four guns installed 1910 by British to defend deep water channel leading to Royal Navy Dockyard and Hamilton, Bermuda
View of the interior of Mousa Broch on Mousa Island in Shetland, Scotland, United Kingdom
Ring of Brodgar, UNESCO, Orkney Islands, Scotland, United Kingdom
Basalt boulders and cliffs, Johnson Canyon between Bainbridge Steel and Stone Dams, Kaibab National Forest, Arizona, United States of America
Basalt formation in Johnson Canyon east of the Bainbridge Steel Dam Lake near Ash Fork, Kaibab National Forest, Arizona, United States of America
Old water pipe, Johnson Canyon between Bainbridge Steel and Stone Dams near Ash Fork, Kaibab National Forest, Arizona, United States of America
Gran Cratere (The Great Crater) and Aeolian Islands view, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe
Bathers enjoying the therapeutic benefits of the volcanic mud in the hot spring pool, Vulcano Island, Aeolian Islands, UNESCO World Heritage Site, north of Sicily, Italy, Mediterranean, Europe
Three Natural Bridges of the Wulong Karst geological park, UNESCO World Heritage Site in Wulong county, Chongqing, China, Asia
Three Natural Bridges of the Wulong Karst geological park, UNESCO World Heritage Site in Wulong county, Chongqing, China, Asia
Furong stalactite cave of the Wulong Karst geological park, UNESCO World Heritage Site in Wulong county, Chongqing, China, Asia
Panorama of Shiqiao Lake of the Wulong Karst geological park, UNESCO World Heritage Site, Wulong county, Chongqing, China, Asia
Perito Moreno Glacier, UNESCO World Heritage Site, around El Calafate, Santa Cruz province, Patagonia, Argentina, South America
Stairs up to the seconnd floor in the historic Desert View Watchtower at Grand Canyon South Rim, artwork created by Fred Kobotie in 1933, now owned by the National Park Service, UNESCO World Heritage Site, Arizona, United States of America, North America
The Kiva of the ancient Tusayan Ruins at Grand Canyon South Rim, UNESCO World Heritage Site, Arizona, United States of America, North America
Scenic view of Leon Dormido (Sleeping Lion) Island off San Cristobal Island in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America
Lava lizard (Microlophus spp) in the Galapagos Islands Archipelago, UNESCO World Heritage Site, Ecuador, South America
Path leading under the red rock cliffs of Los Cahorros Monachil, Monachil, Sierra Nevada, Granada, Andalusia, Spain, Europe
Rock formations with distant views of Uchisar Castle at sunrise, Goreme, Cappadocia, Anatolia, Turkey, Asia Minor, Asia
Abstract of terraces in Moray, Sacred Valley, Urubamba Province, Cusco (Cuzco) Region, Peru, South America
El Teide National Park, UNESCO World Heritage Site, Tenerife, Canary Islands, Spain, Atlantic, Europe
Furnas Valley, a site of bubbling hot springs and fumaroles on the Azorean capital island of Sao Miguel, Azores, Portugal, Europe
Tourists at John Ford Point, Monument Valley, Arizona, United States of America, North America
Grand Canyon, Pima Point, Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America
The endemic Opuntia cactus (Opuntia echios) cactus growing in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America
The sheer cliff of the Red Wall along the North Kaibab Trail, Grand Canyon North Rim, UNESCO, Arizona, United States of America
Jabal Ikmah Site, world's largest concentration of well-preserved Dadanitic inscriptions, 1st millennium BCE, AlUla, Medina Province, Saudi Arabia
Cave of Elafonisos island with orange rock color painted in white, Greece
Meteora, ancient holy Monastery of Rousanos Saint Barbara, UNESCO, Kalabaka, Greece
Drone aerial view of Meteora with ancient holy Monastery of Varlaam and Great Meteoron, UNESCO, Kalabaka, Greece
Petrified forest, Agia Marina, Agios Nikolaos Geopark, beach with turquoise water in the south of Greece, Greece
Extraordinary sandstone rock structure called Dancing Rocks in the Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia
Ancient symbols and rock carvings on a sandstone rock cliff in the Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia
Aerial view of Qasr al-Farid, the largest tomb within Site of Hegra (Madain Salih), UNESCO, in the area of AlUla, Medina Province, Saudi Arabia
Aerial of tombs carved in sandstone rock of Jabal Banat (Qasr al-Bint), Hegra (Madain Salih), UNESCO, AlUla area, Medina Province, Saudi Arabia
Aerial view of the Maraya Theatre, architect Studio Gio Forma, mirrored structure in AlUla's Ashar Valley, AlUla, Medina Province, Saudi Arabia
Passage through the Siq channel at Jabal Ithlib area within the Site of Hegra (Madain Salih), UNESCO, AlUla, Medina Province, Saudi Arabia
Tombs carved into sandstone rock of Jabal Banat (Qasr Al-Bint) area in site of Hegra (Madain Salih), UNESCO, AlUla, Medina Province, Saudi Arabia
Tombs carved into sandstone rock of Jabal Banat (Qasr Al-Bint) area in site of Hegra (Madain Salih), UNESCO, AlUla, Medina Province, Saudi Arabia
Hoodoos at Bryce Point, Bryce Canyon National Park, Utah, United States of America
The archaeological ruins of Pompeii with Mount Vesuvius in the background, UNESCO, Campania, Italy
Continental drift between North American and Eurasian tectonic plates, Thingvellir National Park, UNESCO, in winter, Western Region, Iceland
Continental drift between North American and Eurasian tectonic plates, Thingvellir National Park, UNESCO, in winter, Western Region, Iceland
The Giants Causeway, UNESCO World Heritage Site, County Antrim, Ulster, Northern Ireland, United Kingdom, Europe
The intertidal zone of the Quantock Coast, West Somerset, contains an abundance of geology and wildlife. It is a Site of Special Scientific Interest (SSSI) and is of international geological importance.
The intertidal zone of the Quantock Coast, West Somerset, contains an abundance of geology and wildlife. It is a Site of Special Scientific Interest (SSSI) and is of international geological importance.
The intertidal zone of the Quantock Coast, West Somerset, contains an abundance of geology and wildlife. It is a Site of Special Scientific Interest (SSSI) and is of international geological importance.
View over the Ilulissat Icefjord, UNESCO World Heritage Site, Western Greenland, Denmark, Polar Regions
Floating icebergs, Ilulissat Icefjord, UNESCO World Heritage Site, Western Greenland, Denmark, Polar Regions
Giant rock cliff, Nuuk Icefjord, Western Greenland, Denmark, Polar Regions
Man enjoying sunset in Wadi Rum desert, UNESCO World Heritage Site, Jordan, Middle East
Galapagos Land Iguana (Conolophus subcristatus), large lizard can can grow to five feet long and live for 60 years, South Plaza island, Galapagos, UNESCO World Heritage Site, Ecuador, South America
Inishmore, largest of the Aran Islands, Galway Bay, County Galway, Connacht, Republic of Ireland
Mountain rock formation around AlUla, Medina Province, Saudi Arabia
Aerial view from hot air balloon over Hegra site and around, AlUla, Medina Province, Saudi Arabia
Aerial view from hot air balloon over Hegra site and around, AlUla, Medina Province, Saudi Arabia
Methoni castle and bridge entrance, Peloponnese, Greece
Meteora, ancient holy Monastery of Varlaam, UNESCO, Kalabaka, Greece
Meteora, ancient holy Monastery of Rousanos Saint Barbara, UNESCO, Kalabaka, Greece
Meteora, ancient holy Monastery of Rousanos Saint Barbara, UNESCO, Kalabaka, Greece
People meeting in front of magnificent sandstone rock structure in the Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia
Extraordinary sandstone rock structure called Dancing Rocks in the Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia
Mountainscape viewed from the top of Harrat volcanic plateau, AlUla, Medina Province, Saudi Arabia
Aerial view of Jabal Ithlib area within Site of Hegra (Madain Salih), UNESCO, in the area of AlUla, Medina Province, Saudi Arabia
Aerial view of Qasr al-Farid, the largest tomb within Site of Hegra (Madain Salih), UNESCO, in the area of AlUla, Medina Province, Saudi Arabia
Passage through the Siq channel at Jabal Ithlib area within the Site of Hegra (Madain Salih), UNESCO, AlUla, Medina Province, Saudi Arabia
Passage through the Siq channel at Jabal Ithlib area within the Site of Hegra (Madain Salih), UNESCO, AlUla, Medina Province, Saudi Arabia
Tombs carved into sandstone rock of Jabal Banat (Qasr Al-Bint) area in site of Hegra (Madain Salih), UNESCO, AlUla, Medina Province, Saudi Arabia
Woman at Tomb of Lihyan, son of Kuza (Qasr al-Farid), carved into sandstone outcrop in Hegra, UNESCO, AlUla, Medina Province, Saudi Arabia
Jabal Alfil (Elephant Rock) by night, a natural red sandstone formation in the area of AlUla, Medina Province, Saudi Arabia
Jabal Alfil (Elephant Rock) by night, a natural red sandstone formation in the area of AlUla, Medina Province, Saudi Arabia
Stairway to Dala hill historic iron working place, Kano, Nigeria